Motherboard PRIME B660M-AJ D4
E19241 First Edition September 2021 Copyright © 2021 ASUSTeK COMPUTER INC. All Rights Reserved. No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”).
Contents Safety information....................................................................................................... iv About this guide........................................................................................................... v Package contents........................................................................................................ vi PRIME B660M-AJ D4 specifications summary.........................................................
Safety information Electrical safety • To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the system. • When adding or removing devices to or from the system, ensure that the power cables for the devices are unplugged before the signal cables are connected. If possible, disconnect all power cables from the existing system before you add a device.
About this guide This user guide contains the information you need when installing and configuring the motherboard. How this guide is organized This guide contains the following parts: • Chapter 1: Product Introduction This chapter describes the features of the motherboard and the new technology it supports. It includes descriptions of the switches, jumpers, and connectors on the motherboard.
Package contents Check your motherboard package for the following items. Motherboard 1 x PRIME B660M-AJ D4 motherboard Cables 2 x SATA 6Gb/s cables Miscellaneous 1 x I/O Shield 1 x M.2 Rubber Package 1 x M.2 SSD screw package Application DVD 1 x Support DVD Documentation 1 x User Guide If any of the above items is damaged or missing, contact your retailer.
PRIME B660M-AJ D4 specifications summary Total supports 2 x M.2 slots and 4 x SATA 6Gb/s ports* Intel® 12th Gen Processors M.2_1 slot (Key M), type 2242/2260/2280 - Intel® 12th Gen processors support PCIe 4.0 x4 mode Storage Intel® B660 Chipset** M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode) 4 x SATA 6Gb/s ports * Intel® Rapid Storage Technology supports SATA RAID 0/1/5/10. ** Intel® Rapid Storage Technology supports Intel® Optane Memory H Series on PCH attached M.2 slots.
PRIME B660M-AJ D4 specifications summary Storage related 2 x M.2 slots (Key M) 4 x SATA 6Gb/s ports USB 2 x USB 3.2 Gen 1 headers support additional 4 USB 3.2 Gen 1 ports 1 x USB 2.0 header supports additional 2 USB 2.0 ports 1 x USB 2.0 header supports additional 1 USB 2.
PRIME B660M-AJ D4 specifications summary AI Suite 3 - Performance And Power Saving Utility TurboV EVO EPU DIGI+ VRM ASUS CPU-Z Software Features Norton Anti-virus software (Free Trial version) WinRAR UEFI BIOS ASUS EZ DIY - ASUS CrashFree BIOS 3 - ASUS EZ Flash 3 - ASUS UEFI BIOS EZ Mode BIOS 128Mb Flash ROM, UEFI AMI BIOS Manageability WOL by PME, PXE Operating System Software Features Windows® 11 64-bit Windows® 10 64-bit mATX Form Factor 9.6 inch x 9.6 inch (24.4 cm x 24.
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1 Product Introduction 1.1 Before you proceed Take note of the following precautions before you install motherboard components or change any motherboard settings. 1.2 • Unplug the power cord from the wall socket before touching any component. • Before handling components, use a grounded wrist strap or touch a safely grounded object or a metal object, such as the power supply case, to avoid damaging them due to static electricity.
1.2.1 Layout contents 1. CPU socket The motherboard comes with a surface mount Intel® Socket LGA1700 designed for 12th Gen Intel® Core™, Pentium® Gold and Celeron® Processors. For more details, refer to Central Processing Unit (CPU). 2. DDR4 DIMM slots The motherboard comes with Dual Inline Memory Modules (DIMM) slots designed for DDR4 (Double Data Rate 4) memory modules. For more details, refer to System memory. 3. Expansion slots 4.
7. SATA 6Gb/s ports The SATA 6Gb/s ports allow you to connect SATA devices such as optical disc drives and hard disk drives via SATA cables. 8. USB 3.2 Gen 1 headers The USB 3.2 Gen 1 module is purchased separately. PIN 1 USB3+5V IntA_P1_SSRXIntA_P1_SSRX+ GND IntA_P1_SSTXIntA_P1_SSTX+ GND IntA_P1_DIntA_P1_D+ GND USB3+5V IntA_P2_SSRXIntA_P2_SSRX+ GND IntA_P2_SSTXIntA_P2_SSTX+ GND IntA_P2_DIntA_P2_D+ USB+5V USB_P1USB_P1+ GND NC 9. USB 2.0 headers The USB 2.
11. AURA RGB headers The RGB headers allow you to connect RGB LED strips. The RGB headers support 5050 RGB multi-color LED strips (12V/G/R/B), with a maximum power rating of 3A (12V), and no longer than 3m. Before you install or remove any component, ensure that the ATX power supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, or components. • Actual lighting and color will vary with LED strip.
• We recommend that you connect a high-definition front panel audio module to this header to avail of the motherboard’s highdefinition audio capability. • If you want to connect a high-definition front panel audio module to this header, set the Front Panel Type item in the BIOS Setup to [HD Audio]. By default, this header is set to [HD Audio]. AGND NC SENSE1_RETUR This header is for a chassis-mounted front panel audio I/O module that supports HD audio standard.
• System warning speaker (4-pin SPEAKER) This 4-pin header is for the chassis-mounted system warning speaker. The speaker allows you to hear system beeps and warnings. • ATX power button/soft-off button (2-pin PWRSW) This header is for the system power button. Pressing the power button turns the system on or puts the system in sleep or soft-off mode depending on the operating system settings. Pressing the power switch for more than four seconds while the system is ON turns the system OFF.
4. Line In port (light blue). This port connects the tape, CD, DVD player, or other audio sources. 5. Line Out port (lime). This port connects a headphone or a speaker. In 4-channel, 5.1-channel, and 7.1-channel configurations, the function of this port becomes Front Speaker Out. 6. HDMI® ports. These ports are for a High-Definition Multimedia Interface (HDMI®) connector, and are HDCP compliant allowing playback of HD DVD, Blu-ray, and other protected content. 7. USB 2.0 ports.
1.3 Central Processing Unit (CPU) This motherboard comes with a surface mount Intel® Socket LGA1700 for 12th Gen Intel® Core™, Pentium® Gold and Celeron® Processors. Unplug all power cables before installing the CPU. • Ensure that you install the correct CPU designed for LGA1700 socket only. DO NOT install a CPU designed for LGA1155, LGA1156, LGA1151, and LGA1200 sockets on the LGA1700 socket.
PRIME B660M-AJ D4 1-9
1.4 System memory This motherboard comes with four Double Data Rate 4 (DDR4) Dual Inline Memory Module (DIMM) sockets. The figure illustrates the location of the DDR4 DIMM sockets: DIMM_A1 DIMM_A2 DIMM_B1 DIMM_B2 Channel Sockets Channel A DIMM_A1 & DIMM_A2 Channel B DIMM_B1 & DIMM_B2 • You may install varying memory sizes in Channel A and Channel B. The system maps the total size of the lower-sized channel for the dual-channel configuration.
Installing a DIMM 1 2 A A B To remove a DIMM A B PRIME B660M-AJ D4 1-11
1.5 M.2 installation 1 3 2 1 OPTIONAL 3 8 5 4 7 8 6 5 4 1-12 • This M.2 rubber pad is optional for when installing a single sided M.2 storage device. Ensure to install the bundled M.2 rubber pad before installing your single sided M.2 storage device. • DO NOT install the bundled M.2 rubber pads when installing a double-sided M.2 storage device. The rubber pad installed by default is compatible with double sided M.2 storage devices. • The diagrams in this section are for reference only.
BIOS and RAID Support 2.1 Knowing BIOS 2 The new ASUS UEFI BIOS is a Unified Extensible Interface that complies with UEFI architecture, offering a user-friendly interface that goes beyond the traditional keyboardonly BIOS controls to enable a more flexible and convenient mouse input. You can easily navigate the new UEFI BIOS with the same smoothness as your operating system. The term “BIOS” in this user manual refers to “UEFI BIOS” unless otherwise specified.
2.2 BIOS Setup program Use the BIOS Setup to update the BIOS or configure its parameters. The BIOS screens include navigation keys and brief onscreen help to guide you in using the BIOS Setup program. Entering BIOS at startup To enter BIOS Setup at startup, press or during the Power-On Self Test (POST). If you do not press or , POST continues with its routines. Entering BIOS Setup after POST To enter BIOS Setup after POST: • Press ++ simultaneously.
2.3 ASUS EZ Flash 3 The ASUS EZ Flash 3 feature allows you to update the BIOS without using an OS‑based utility. Ensure to load the BIOS default settings to ensure system compatibility and stability. Select the Load Optimized Defaults item under the Exit menu or press hotkey . To update the BIOS: • This function can support devices such as a USB flash disk with FAT 32/16 format and single partition only.
2.4 ASUS CrashFree BIOS 3 The ASUS CrashFree BIOS 3 utility is an auto recovery tool that allows you to restore the BIOS file when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS file using a USB flash drive that contains the BIOS file. Recovering the BIOS 1. Download the latest BIOS version for this motherboard from https://www.asus.com/support/. 2. Rename the BIOS file as ASUS.CAP or PB660AJ.CAP and copy the renamed BIOS file to a USB flash drive. 3.
2.5 RAID configurations The motherboard comes with the Intel® Rapid Storage Technology that supports SATA RAID 0, RAID 1, RAID 5 and RAID 10 configuration. For more information on configuring your RAID sets, please refer to the RAID Configuration Guide which you can find at https://www.asus.com/support, or by scanning the QR code. RAID definitions RAID 0 (Data striping) optimizes two identical hard disk drives to read and write data in parallel, interleaved stacks.
2-6 Chapter 2: BIOS and RAID Support
Appendix Notices FCC Compliance Information Responsible Party: Address: Phone / Fax No: Asus Computer International 48720 Kato Rd., Fremont, CA 94538, USA (510)739-3777 / (510)608-4555 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Compliance Statement of Innovation, Science and Economic Development Canada (ISED) This device complies with Innovation, Science and Economic Development Canada licence exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.
Google™ License Terms Copyright© 2021 Google Inc. All Rights Reserved. Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ASUS Recycling/Takeback Services ASUS recycling and takeback programs come from our commitment to the highest standards for protecting our environment. We believe in providing solutions for you to be able to responsibly recycle our products, batteries, other components as well as the packaging materials. Please go to http://csr.asus.com/english/Takeback.htm for detailed recycling information in different regions. DO NOT throw the motherboard in municipal waste.
English ASUSTeK Computer Inc. hereby declares that this device is in compliance with the essential requirements and other relevant provisions of related UKCA Directives. Full text of UKCA declaration of conformity is available at: www.asus.com/support English ASUSTeK Computer Inc. hereby declares that this device is in compliance with the essential requirements and other relevant provisions of related Directives. Full text of EU declaration of conformity is available at: www.asus.
Warranty EN: ASUS Guarantee Information • ASUS offers a voluntary manufacturer’s Commercial Guarantee. • ASUS reserves the right to interpret the provisions of the ASUS Commercial Guarantee. • This ASUS Commercial Guarantee is provided independently and in addition to the statutory Legal Guarantee and in no way affects or limits the rights under the Legal Guarantee. CR: Informacije o ASUS jamstvu • ASUS dragovoljno nudi komercijalno proizvođačko jamstvo.
PG: Informações de Garantia ASUS • A ASUS oferece uma Garantia Comercial voluntária do fabricante. • A ASUS reserva o direito de interpretar as disposições da Garantia Comercial da ASUS. • Esta Garantia Comercial da ASUS é fornecida de forma independente além da Garantia Legal estatutária e não afeta nem limita de qualquer forma os direitos estabelecidos na Garantia Legal. Para consultar todas as informações sobre a garantia, visite https://www.asus.com/pt/support/.
ASUS contact information ASUSTeK COMPUTER INC. Address: 1F., No. 15, Lide Rd., Beitou Dist., Taipei City 112, Taiwan ASUS COMPUTER INTERNATIONAL (America) Address: 48720 Kato Rd., Fremont, CA 94538, USA ASUS COMPUTER GmbH (Germany and Austria) Address: Harkortstrasse 21-23, 40880 Ratingen, Germany ASUSTeK (UK) LIMITED Address: 1st Floor, Sackville House, 143-149 Fenchurch Street, London, EC3M 6BL, England, United Kingdom Service and Support Visit our multi-language website at https://www.asus.
